The problem with hobbits is heat soaking. I've got three and each has a unique attempt to mitigate it.
1. 60 cc stocko shocko ...dos cycles motzig obtained jailing head ...major improvement. I used a Cheetachrome pull start because it's got a pa 50-1 crank so one way bearing won't work without major changes.
2. Athena 70 cc kit with derby head remachined and decomp sealed And studs slotted - one way bearing .
3. Mallosi watercooler kit with Bosch 12 v pump, radiator and onotjer one way bearing.
Otherwise u r limited in how u ride your moped. If u keep a Hobbit stock it's designed not to seize because it produces less heat.